Editing Color blindness (section)

===Advantages===
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Deuteranomals are better at distinguishing shades of [[khaki]],<ref>{{cite news | doi = 10.1038/news051205-1| title = Colour blindness may have hidden advantages| journal = Nature| date = December 5, 2005| last1 = Simonite| first1 = Tom }}</ref> which may be advantageous when looking for predators, food, or camouflaged objects hidden among foliage.<ref name = dimension>{{cite journal |last1=Bosten |first1=J.M. |last2=Robinson |first2=J.D. |last3=Jordan |first3=G. |last4=Mollon |first4=J.D. |title= Multidimensional scaling reveals a color dimension unique to 'color-deficient' observers |journal=Current Biology |date=December 2005 |volume=15 |issue=23 |pages=R950–R952 |doi= 10.1016/j.cub.2005.11.031|pmid=16332521 |s2cid=6966946 |doi-access=free |bibcode=2005CBio...15.R950B }}</ref> Dichromats tend to learn to use texture and shape clues and so may be able to penetrate camouflage that has been designed to deceive individuals with normal color vision.<ref name="Morgan"/><ref>{{cite journal | doi= 10.1038/146226a0 | title=Colour-Blindness and Camouflage | journal=Nature | year=1940 | volume=146 | issue=3694 | page=226 | bibcode=1940Natur.146Q.226. | s2cid=4071103 | doi-access=free }}</ref>

Some tentative evidence finds that the color blind are better at penetrating certain color camouflages. Such findings may give an evolutionary reason for the high rate of red–green color blindness.<ref name=Morgan>{{cite journal | vauthors = Morgan MJ, Adam A, Mollon JD | s2cid = 35694740 | title = Dichromats detect colour-camouflaged objects that are not detected by trichromats | journal = Proceedings. Biological Sciences | volume = 248 | issue = 1323 | pages = 291–5 | date = June 1992 | pmid = 1354367 | doi = 10.1098/rspb.1992.0074 | bibcode = 1992RSPSB.248..291M }}</ref> There is also a study suggesting that people with some types of color blindness can distinguish colors that people with normal color vision are not able to distinguish.<ref name = dimension/> In World War II, color blind observers were used to penetrate camouflage.<ref>{{cite news|title=Colour blindness not all it seems|url=http://news.bbc.co.uk/2/hi/health/4498734.stm|access-date=21 June 2016|work=[[BBC News]]|date=6 December 2015|url-status=live|archive-url=https://web.archive.org/web/20160623215610/http://news.bbc.co.uk/2/hi/health/4498734.stm|archive-date=23 June 2016}}</ref>{{Failed verification|date=October 2024}}

In the presence of chromatic noise, the color blind are more capable of seeing a luminous signal, as long as the chromatic noise appears [[Metamerism (color)|metameric]] to them.<ref>{{cite journal |last1=Sousa |first1=Bruna Rafaela Silva |last2=Loureiro |first2=Terezinha Medeiros Gonçalves |last3=Goulart |first3=Paulo Roney Kilpp |last4=Cortes |first4=Maria Izabel Tentes |last5=Costa |first5=Marcelo Fernandes |last6=Bonci |first6=Daniela Maria Oliveira |last7=Baran |first7=Luiz Claudio Portnoi |last8=Hauzman |first8=Einat |last9=Ventura |first9=Dora Fix |last10=Miquilini |first10=Leticia |last11=Souza |first11=Givago Silva |title=Specificity of the chromatic noise influence on the luminance contrast discrimination to the color vision phenotype |journal=Scientific Reports |date=21 October 2020 |volume=10 |issue=1 |pages=17897 |doi=10.1038/s41598-020-74875-3|pmid=33087826 |pmc=7578001 |bibcode=2020NatSR..1017897S }}</ref> This is the effect behind most "reverse" [[Pseudoisochromatic plate]]s (e.g. ''"hidden digit"'' [[Ishihara plate]]s) that are discernible to the color blind but unreadable to people with typical color vision.{{citation needed|date=September 2022}}